PyArrow: Pass in null-mask #1264
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kevinjqliu
approved these changes
Oct 29, 2024
| return pa.StructArray.from_arrays( | ||
| arrays=field_arrays, | ||
| fields=pa.struct(fields), | ||
| mask=struct_array.is_null() if isinstance(struct_array, pa.StructArray) else None, |
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| pyarrow_table: pa.Table = pa.Table.from_pylist(records, schema=schema) | ||
| table.append(pyarrow_table) | ||
|
|
||
| assert pyarrow_table.to_pandas()["struct_field_1"].tolist() == table.scan().to_pandas()["struct_field_1"].tolist() |
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Looks like the null masking is also done by pandas.
>>> pyarrow_table['struct_field_1']
<pyarrow.lib.ChunkedArray object at 0x10482c6d0>
[
-- is_valid:
[
false
]
-- child 0 type: string
[
""
]
-- child 1 type: int32
[
0
]
-- child 2 type: float
[
0
]
]
>>> pyarrow_table['struct_field_1'].to_pandas()
0 None
Name: struct_field_1, dtype: object
kevinjqliu
approved these changes
Oct 29, 2024
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Author
|
Thanks for the prompt review @kevinjqliu |
sungwy
pushed a commit
to sungwy/iceberg-python
that referenced
this pull request
Dec 7, 2024
* PyArrow: Pass in null-mask * Add missing flag
sungwy
pushed a commit
to sungwy/iceberg-python
that referenced
this pull request
Dec 7, 2024
* PyArrow: Pass in null-mask * Add missing flag
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Fixes #1255